| 摘要 |
PURPOSE:To remove the dispersion of analog image outputs from a sensor and to improve the reading quality of an image by setting up the scanning timing of the light response type sensor to a fixed period. CONSTITUTION:The image reading sensor 1 outputs an analog signal corresponding to an original image while setting up one line to a fixed period by a clock from a sensor driving timing generator 4. The sensor output is converted into binary image data by a binary-encoding part 3 and then the converted data are written in a line memory 11 or 12 in accordance with the instruction of line memory writable instruction parts 7, 8. The image data of one line written in the memory 11 or 12 are read out by a reading memory switching part 6. Since the variance of analog outputs from the light response type sensor can be removed in said constitution, the reading quality of an image can be improved.
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